Enhancing light absorption in graphene with plasmonic lattices

TitleEnhancing light absorption in graphene with plasmonic lattices
Publication TypeJournal Article
Year of Publication2017
AuthorsG. Pirruccio, M. Ramezani, G J. Rivas
JournalEurophysics Letters
Volume119
Issue1
Pagination17006
Type of ArticleFocus Article, Featured Article
Abstract

We present a novel strategy based on metallic arrays of nanoparticles for enhancing the optical absorption in a monolayer of graphene. The collective resonances sustained by the metallic array and arising from the radiative coupling of localized surface plasmon resonances favour the interaction between the graphene layer and the light distributed in the structure. We measure the dispersion diagram of the allowed hybrid plasmonic-photonic modes and we calculate that one of these modes leads to an enhancement of the optical absorption of graphene by a factor 7. We propose to exploit this result for the rational design of graphene-based photodetectors.

DOI10.1209/0295-5075/119/17006
Division

MaSF

Department

PFE

PID

63af43f2c3e6b87793c7f5297493eed9

Alternate TitleEPL
LabelOA

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